Cleaning brush



FIG. 1 is a front perspective view of a cleaning brush showing our new design;

FIG. 2 is a perspective view showing the design in alternate position and in condition of use;

FIG. 3 is a front view;

FIG. 4 is a rear view;

FIG. 5 is a left side view;

FIG. 6 is a right side view;

FIG. 7 is a top view; and,

FIG. 8 is a bottom view.

The broken lines depicting a hand and a pipe detail in FIG. 2 show environment and form no part of the claimed design. 

CLAIM We claim the ornamental design for a cleaning brush, as shown and described. 